How to switch between the two apps open in multi-window view with a keyboard shortcut?

[Android Central Question]

I use multi-window view very often and whenever I need to switch between the active apps I have to touch the screen. I was wondering if there was a more convenient way to switch between the active apps with the external keyboard. I have tried several combinations with the 'Tab' key but this only switches one of the windows between open apps.

 

[Rukbat]

Not the external keyboard, the external mouse - so you need a Bluetooth mouse or a USB hub.